Name: 為什麼蜘蛛不會被自己的網黏住？ | #aumsum (Why dont spiders stick to their webs? | #aumsum)
Uploaded: 2025-12-08T10:50:50.000Z
Duration: 58 s
Description: 【看影片學英語】數萬部 YouTube 影片，搭配英漢字典即點即查，輕鬆掌握單字發音與用法，長久累積看電影不必再看字幕。

Usually, a spider's web is made up of silk threads which are covered with droplets of glue.

Now, when an insect flies through the web, the insect normally gets stuck to the sticky threads.

But, a spider does not get stuck because its legs have tiny hair like structures called setae.

The setae gets stuck onto the thread helping the spider to get grip and support to walk.

Now as the point of contact is very less, the glue has very less surface area to stick.

Hence, the spider easily pulls its legs without sticking.

Besides this, a research suggests that certain spider's legs are covered with a special chemical coating.

This coating also helps the legs from sticking to the glue.

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